Polymorphism with Arrays

In this problem, you will create a program that reads a radius, width, and height from standard input, stores Circle and Rectangle instances in a Shape array, and uses polymorphism to call getArea() on each element in a loop, displaying each shape's calculated area to standard output.

Learning Objective: Understand how to handle different child class instances uniformly in parent class type arrays

Overview

Create a program that stores different Shape objects in an array and processes them uniformly in a loop.

Input Format

radius of circle (line 1)
width height of rectangle (line 2, space-separated)

Specifications

• Define getArea() method in Shape class (returns 0.0)
• Circle class extends Shape, calculates area from radius (pi*r^2)
• Rectangle class extends Shape, calculates area from width*height
• Read radius, width, height with Scanner; store in array in Main and output area in loop

Output Format

Area: [circle area]
Area: [rectangle area]

Example

Input:

5
4 6

Output:

Area: 78.53975
Area: 24.0